Dalian, also known as Bin Cheng and Romantic City, is a prefecture-level city, sub-provincial city, planned city, and megacity under the jurisdiction of Liaoning Province, located in the southernmost part of Northeast China, surrounded by the sea on three sides, bordering the Yellow Sea in the east, the Bohai Sea in the west, the Shandong Peninsula in the south, and the northeastern plain in the north, and situated in the northern hemisphere warm-temperate zone region, belonging to the temperate monsoon climate with oceanic characteristics; as of 2023, the city has seven districts, one county, and two county-level cities under its jurisdiction. counties, and 2 county-level cities under its jurisdiction, with a total area of 12,574 square kilometers; as of the end of 2022, the city had a household population of 6,087,000 and a resident population of 7,531,000. Dalian has a long history, having been developed some 6,000 years ago. It was first called Dalian City in 1899, and was approved as a coastal open city in 1984, as a planned city with provincial economic management authority in 1985, and as a sub-provincial city in 1994. Dalian is China's important port, industry, trade, finance and tourism city, is the Northeast Asia international shipping center, international logistics center, international trade center and regional financial center, the window of the Northeast open to the outside world, but also the State Council approved the determination of the northern coast of China's important central cities, ports and scenic tourist cities, the center of the Liaoning Coastal Economic Belt, or the national health city, national forest city, national garden city, national city city, national garden city, national civilized city, national model city for the construction of strong intellectual property rights, China's benchmark city for the construction of an international business environment and the first batch of national model cities for the construction of a rule of law government, and was selected as a second-tier city in the world by GaWC in 2018 and 2020. In 2023, Dalian realized a gross regional product of 875.29 billion yuan, a year-on-year growth of 6.0%.